The objective of this study is to investigate body image disturbances in adolescents with anorexia nervosa. To capture the multidimensional perspective, body image disturbances will be studied on a perceptual, cognitive-affective and a behavioural…
ID
Source
Brief title
Condition
- Eating disorders and disturbances
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
Following our study objectives, there are 5 main study parameters/endpoints.
The main study parameters of the current study are the differences in levels of
body image disturbances in adolescent girls with and without anorexia nervosa,
based on experimental tasks and self-report measures. These measures allow us
to test whether adolescents with AN experience their body size more different
than adolescents without AN. The measures will be described in more detail
below.
The main endpoint of the Visual Size Estimation; the percentage of
misestimations where a higher percentage indicates a larger overestimation. We
expect adolescents with anorexia nervosa to obtain a higher percentage than
adolescents without anorexia nervosa.
The main endpoint of the Tactile Estimation task; the percentage of
misestimations where a higher percentage indicates larger overestimation. We
expect adolescents with anorexia nervosa to obtain a higher percentage than
adolescents without anorexia nervosa.
The main endpoint of the Hoop Task; the percentage of misestimation of hoop
size. We expect adolescents with anorexia nervosa to obtain a higher percentage
than adolescents without anorexia nervosa.
The main endpoint of the cognitive-affective component of body image
disturbances: all scores of all 20 items of the LAV summed up.
The main endpoint of the behavioral component of body image disturbances:
scores on all 27 items of the BCAQ summed up.
Secondary outcome
Following the objectives of our study, there is one secondary study parameters.
The second study parameters are the covarying effects of Social (Appearance)
Anxiety, fear for negative (appearance) evaluation and Intolerance of
Uncertainty on body image disturbances in adolescent girls with and without
anorexia nervosa. Self-report measures will be used and will be described in
more detail below.
The main endpoint of social anxiety as potential underlying mechanism for body
image disturbances; scores on all three items on the mini SPIN summed up.
The main endpoint of social appearance anxiety as potential underlying
mechanism for body image disturbances; scores on all 17 items on the SAAS
summed up.
The main endpoint of fear for negative appearance evaluation as potential
underlying mechanism for body image disturbances; scores on all 8 items on the
FNAES summed up.
The main endpoint of intolerance of uncertainty as a potential underlying
mechanism for body image disturbances; scores on all 12 items on the IUS-12
summed up. The additional sub scales regarding Bodily IU (BIU) also consists of
12 items and the scores will be summed up.
Background summary
Anorexia nervosa (AN) is a very serieous psychiatric illness that often affects
adolescent girls and is characterized by a very low body weight and a disturbed
body image among other things. AN has very severe implications for the physical
health of adolescent girls who are still in full development of their bodies.
Furthermore, AN has a high mortality rate. Until now, it is still unclear how
these adolescent girls can be treated in the best way, in terms of treatment as
well as in terms of relapse prevention. Taken this together, AN is one of the
most difficult mental disorders to treat. As the disturbeances in body image is
one of the key symptoms of AN, a better understanding of this disturbed body
image could lead to an improvement of treatments related to body image
disturbances. Moreover, this research can also result into a better
understanding of body image as a maintaining factor as research has shown that
body image disturbances remain present after recovery.
Study objective
The objective of this study is to investigate body image disturbances in
adolescents with anorexia nervosa. To capture the multidimensional perspective,
body image disturbances will be studied on a perceptual, cognitive-affective
and a behavioural level. Results will be compared to those from adolescents
without anorexia nervosa
- The perceptual component will be measured using the Tactile Estimation Test
(tactile size perception), The Visual Size Estimation Test (visual size
perception) and the Hoop Test (motor planning and execution) (see e.g. Keizer
et al., 2011; Keizer et al., 2012; Keizer et al., 2013, but also METC UMCU
protocol # 08-365 and 11-095 in which similar tasks have been used in adult AN
patients).
- The cognitive-affective component will be measured using self-report
questionnaires (Probst et al. 1995)
- The cognitive-affective and behavioural component will be measured using
self-report questionnaires (Legenbauer et al., 2019).
Study design
The proposed study has a quasi-experimental design. The participants will be
sampled from existing populations: an anorexia nervosa patient population and a
healthy population.
Study burden and risks
The administration of the tasks and the questionannaires will take
approximately 70 minutes. Based on previous experiences conducting research
with patients with anorexia nervosa this type of research is not experienced as
much of a burden to the patients. However, participants will be closely
monitored by a researcher who already is experienced in this field.
Heidelberglaan 1
utrecht 3584cs
NL
Heidelberglaan 1
utrecht 3584cs
NL
Listed location countries
Age
Inclusion criteria
Meeting criteria for anorexia nervosa (DSM-V), both subtypes binge purge and
restrictive
Within age group 14-18
Female
Exclusion criteria
For the healthy control group: no current or lifetime
eating disorder
Design
Recruitment
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
| Register | ID |
|---|---|
| CCMO | NL72565.041.20 |